Search Results - "CAVA, R. J"
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The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
Published in Nature materials (01-11-2016)“…The half-Heusler GdPtBi is reported to exhibit negative longitudinal magnetoresistance. This is attributed to the chiral anomaly due to the formation of Weyl…”
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Hexagonal Perovskites as Quantum Materials
Published in Chemical reviews (10-03-2021)“…Hexagonal perovskites, in contrast to the more familiar perovskites, when oxides, allow for face-sharing of metal–oxygen octahedra or trigonal prisms within…”
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Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals
Published in Nature (London) (08-06-2017)“…Intrinsic long-range ferromagnetic order is observed in few-layer Cr 2 Ge 2 Te 6 crystals, with a transition temperature that can be controlled using small…”
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Quantum spin liquids
Published in Science (American Association for the Advancement of Science) (17-01-2020)“…Spin liquids are quantum phases of matter with a variety of unusual features arising from their topological character, including "fractionalization"-elementary…”
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Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
Published in Science (American Association for the Advancement of Science) (05-08-2016)“…In quantum field theory, we learn that fermions come in three varieties: Majorana, Weyl, and Dirac. Here, we show that in solid-state systems this…”
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Evidence for the chiral anomaly in the Dirac semimetal Na3Bi
Published in Science (American Association for the Advancement of Science) (23-10-2015)“…In a Dirac semimetal, each Dirac node is resolved into two Weyl nodes with opposite "handedness" or chirality. The two chiral populations do not mix. However,…”
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Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal Cd3As2
Published in Nature materials (01-03-2015)“…Three-dimensional analogues of graphene have recently been synthesized. The transport properties of such a Dirac semimetal, Cd 3 As 2 , have been studied,…”
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Quantum Oscillations and Hall Anomaly of Surface States in the Topological Insulator Bi2Te3
Published in Science (American Association for the Advancement of Science) (13-08-2010)“…Topological insulators are insulating materials that display massless, Dirac-like surface states in which the electrons have only one spin degree of freedom on…”
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Resistivity plateau and extreme magnetoresistance in LaSb
Published in Nature physics (01-03-2016)“…Time reversal symmetry (TRS) protects the metallic surface modes of topological insulators (TIs). The transport signature of such surface states is a plateau…”
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Evidence for an edge supercurrent in the Weyl superconductor MoTe2
Published in Science (American Association for the Advancement of Science) (01-05-2020)“…Pairs on the edgeMany materials with topologically nontrivial band structures are characterized by currents that run around the edge of the sample and…”
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Large thermal Hall conductivity of neutral spin excitations in a frustrated quantum magnet
Published in Science (American Association for the Advancement of Science) (03-04-2015)“…In frustrated quantum magnets, long-range magnetic order fails to develop despite a large exchange coupling between the spins. In contrast to the magnons in…”
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A magnetic continuum in the cobalt-based honeycomb magnet BaCo2(AsO4)2
Published in Nature materials (2023)“…Quantum spin liquids (QSLs) are topologically ordered states of matter that host fractionalized excitations. A particular route towards a QSL is via strongly…”
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13
Nature of the quantum metal in a two-dimensional crystalline superconductor
Published in Nature physics (01-03-2016)“…Owing to electron localization, two-dimensional materials are not expected to be metallic at low temperatures, but a field-induced quantum metal phase emerges…”
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Spatial fluctuations of helical Dirac fermions on the surface of topological insulators
Published in Nature physics (01-12-2011)“…Helical Dirac fermion states in topological insulators could enable dissipation-free spintronics and robust quantum information processors. A study of the…”
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Transmission of topological surface states through surface barriers
Published in Nature (London) (15-07-2010)“…Topological surface states are a class of novel electronic states that are of potential interest in quantum computing or spintronic applications. Unlike…”
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Band Structure of the IV-VI Black Phosphorus Analog and Thermoelectric SnSe
Published in Physical review letters (10-04-2018)“…The success of black phosphorus in fast electronic and photonic devices is hindered by its rapid degradation in the presence of oxygen. Orthorhombic tin…”
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Superconductivity in Weyl semimetal candidate MoTe2
Published in Nature communications (14-03-2016)“…Transition metal dichalcogenides have attracted research interest over the last few decades due to their interesting structural chemistry, unusual electronic…”
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Topological Phase Transition and Texture Inversion in a Tunable Topological Insulator
Published in Science (American Association for the Advancement of Science) (29-04-2011)“…The recently discovered three-dimensional or bulk topological insulators are expected to exhibit exotic quantum phenomena. It is believed that a trivial…”
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A tunable topological insulator in the spin helical Dirac transport regime
Published in Nature (London) (27-08-2009)“…Helical Dirac fermions-charge carriers that behave as massless relativistic particles with an intrinsic angular momentum (spin) locked to its translational…”
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Observation of a large-gap topological-insulator class with a single Dirac cone on the surface
Published in Nature physics (01-06-2009)“…Recent experiments and theories have suggested that strong spin-orbit coupling effects in certain band insulators can give rise to a new phase of quantum…”
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